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Bulletin No. 18 - Spring 2004
SIPASMycoplasma hyopneumoniae
NIGRELLI A, LEOTTI G, JOISEL F, BONDIOLI A
Protezione a lungo termine contro Mycoplasma hyopneumoniae mediante due diversi piani di vaccinazione nel sistema produttivo del prosciutto di Parma - (Long term protection against Mycoplasma hyopneumoniae by two vaccination programs in
Società Italiana di Patologia ed Allevamento dei Suini - Proceedings, 2004, 267-272
This study was carried out under field conditions in swine raised for the production of Parma's ham and thus slaughtered at 9 months of age, in order to assess the efficacy of two vaccination programs with HYORESP® (Merial) against M. hyopneumoniae. Pigs were distributed into 3 groups: control pigs, pigs vaccinated at one week of age and then at weaning, pigs vaccinated at 7 and 9 weeks of age. Lung lesions at slaughter served as parameter and were evaluated as described by Madec with scores ranging from 0 to 28. Pigs vaccinated with HYORESP® (Merial) had an average lesion score significantly lower compared to the control group. The reduction of lung lesions was of 47% and 51 % in pigs with the early and late vaccination programs respectively.
